Z5054 Ci60/Ci90 Flying adapter Mounting instructions

Transcription

1 Z5054 Ci60/Ci90 Flying adapter Mounting instructions

2 Z5054 Ci60/Ci90 Flying adapter References in the manual CAUTION! IMPORTANT! Symbols on the equipment This refers to a potentially dangerous situation which may lead to personal injury. This refers to a potentially dangerous situation which may lead to equipment damage. This refers to a situation which may cause the equipment to malfunction. Please refer to the information in the operating manual. General Information Mounting instructions Z5054 Ci60/Ci90 Flying adapter Version 2.0E, 05/2003, D2946 d&b audiotechnik AG 2003; all rights reserved. The information presented in this document is, to the best of our knowledge, correct. We will however not be held responsible for the consequences of any errors or omissions. Technical specifications, weights and dimensions can change and should always be confirmed with d&b audiotechnik AG prior to inclusion in any additional documentation. d&b audiotechnik AG Eugen-Adolff-Strasse 134, D Backnang Telephone , Fax

3 General Safety and Installation Advice General safety advice d&b loudspeakers should only ever be flown or installed using recommended d&b rigging accessories. The d&b rigging accessories described in the d&b rigging accessories manual and the specific mounting instructions are designed and manufactured to have a high load safety factor for their intended role. In order to ensure the highest safety standards, the information presented here on the assembly and safe use of d&b rigging accessories must be carefully understood and followed. The installation of d&b loudspeakers using the rigging accessories described in the d&b rigging accessories manual and the specific mounting instructions should only ever be carried out by properly qualified personnel in full compliance with all required safety codes and safety standards in force at the place of installation. (In Germany, this means compliance with the recommendations of BGV C1 GUV 6.15) d&b rigging accessories (components and assemblies) are supplied exclusively for use with specific d&b loudspeakers and are not designed or intended for use with any other loudspeakers or any other devices. The use of d&b rigging accessories to deploy loudspeakers and devices other than those indicated in the d&b rigging accessories manual and the specific mounting instructions is improper use. Improper use can compromise safety by overloading and damaging the rigging accessories. d&b will not be held responsible for any damage or injury resulting directly or indirectly from the improper use of d&b rigging accessories. d&b rigging accessories must not be modified in any way nor should they be assembled in ways other than those indicated in the d&b rigging accessories manual and the specific mounting instructions. Rigging components supplied as part of a complete assembly are non-interchangeable and must not be exchanged with the component parts of any other assembly. The component parts of a d&b rigging accessory must only be assembled using the fasteners and methods of assembly recommended in the d&b rigging accessories manual and the specific mounting instructions. The use of fasteners and methods of assembly not specified or approved by d&b may result in an unsafe rigging assembly. Welding, or any other means of permanently fixing rigging components to each other or to cabinet fixing points is not allowed. General installation advice Only the screws, fasteners, plain and shakeproof washers specified on the relevant page(s) of the d&b rigging accessories manual and the specific mounting instructions shall be used to fasten together, where appropriate, suitable d&b rigging components. d&b rigging components or assemblies must only be fixed to d&b loudspeaker cabinets using the cabinet fixing points, assembly methods and fasteners specified on the relevant page(s) of the d&b rigging accessories manual and the specific mounting instructions. Any wall, floor or ceiling to which a d&b loudspeaker is fixed or (2.0 E) 3-8

4 attached using a d&b rigging accessory must be capable of safely and securely supporting the actual load. The rigging accessory used must be safely and securely fixed both to the loudspeaker and to the wall, floor or ceiling. Other points to consider are: When mounting rigging components on walls, floors or ceilings ensure that all fixings and fasteners used are of an appropriate size and load rating (DIN standards apply within Germany). Wall and ceiling claddings and the construction and composition of walls and ceilings all need to be taken into account when determining whether a particular fixing arrangement can be safely employed for a particular load. Cavity plugs or other specialist fixings, if required, must be of an appropriate type, fitted and used in accordance with the maker s instructions. Use only the rigging accessory fixing holes indicated on the relevant page(s) of the d&b rigging accessories manual and the specific mounting instructions to fix d&b rigging accessories to walls, floors or ceilings. Where specified, the recommended maximum torque settings for screw fasteners must be strictly complied with. Secondary safeties All loudspeakers flown in theatres, studios or other places of work and entertainment must, in addition to the principle load bearing means of suspension, be provided with an independent, properly rated and securely attached secondary safety. Only steel wire ropes or steel chains of an approved construction and load rating may be used as secondary safeties. Plastic covered steel wire ropes are not permitted for use as secondary safeties. As recommended by BGV C1 (GUV 6.15), the secondary safety must prevent the load from dropping more than 20 cm if the principal means of suspension fails. Safety inspections All rigging components and assemblies are subject to wear and tear, aging, corrosion etc. As safety critical components, it s imperative that, prior to each and every use or installation, all rigging components, rigging assemblies and cabinet fixing points are carefully inspected to ensure that they are free of defects and that they function flawlessly. Care should be taken to identify signs of undue wear and tear, dents, cuts, tears, splits and any indications of corrosion. If upon inspection, damage is discovered and there exists even the slightest doubt as to the physical integrity and safety of the damaged item, then the damaged item must not, under any circumstances, be deployed. Regular, more rigorous test and inspection of rigging components must also be carried out. Safety legislation and test and inspection requirements will vary from country to country. In most cases, annual independent test and inspection by a suitably approved and qualified inspector will be required - users must ensure compliance with all applicable safety requirements. d&b recommends regular safety inspections and further recommends that a logbook be kept detailing the test and inspection history of each d&b rigging accessory. 4-8 General safety and mounting instructions

5 Load safety factors Rigging accessories are safety critical components which can, by their failure, lead to injury or death. To maximise safety and to reduce the risk of the possible consequences of failure, there exist various recommendations which attempt to govern the safe design and construction of rigging components. Unfortunately, such recommendations vary from country to country and are frequently adaptations of building or construction safety codes which were never intended to specifically cover loudspeaker rigging. A further complicating factor, frequently a result of insurance requirements, is that different load safety factors may be demanded for different applications. For example, the load safety factor of a rigging component suitable for a fixed, static application may be regarded as insufficient for a mobile application. What exactly is a load safety factor? It is accepted general engineering practice to design and build components to have a minimum 1.25X load safety factor. That means a component or assembly that can resist without breaking, a load 25% greater than its specified safe working load (SWL). Load safety factors are tailored to the estimated level of risk presented by a particular application - the higher the estimated level of risk, then the higher the load safety factor demanded. Because of the high level of risk associated with the possible failure of rigging, load safety factors much greater than 1.25X are demanded. The EU Machinery Directive for example, specifies a 4X load safety factor for shackles. This means that a shackle specified for a SWL of 500 kg should be able to resist a 2000 kg load without breaking. Even more stringent load safety factors than those specified under EU legislation can apply to applications where rigging is used. One of the most demanding safety codes, the one used to derive the high load safety factors for d&b rigging accessories, is the German BGV C1 safety code. Section 9 of Unfallverhütungsvorschrift Veranstaltungs- und Produktionsstätten für szenische Darstellung (BGV C1 GUV 6.15) draws a distinction between components used to rig a fixed, static load and components used to rig a moving load. Different load safety factors are required for otherwise similar components depending upon whether they are used with a fixed or with a moving load. A higher load safety factor being required for rigging subject to the higher stress of dynamic loading. The recommendations are met if it can be shown that: and The SWL of components such as ropes and slings used as rigging for a fixed load does not exceed 1/10 of their calculated ultimate stress The SWL of components such as ropes and slings used as rigging for a moving load does not exceed 1/12 of their calculated ultimate stress... (2.0 E) 5-8

6 A 12X load safety factor is therefore recommended for the following components: Chains Steel wire ropes (for lifting and securing) Shackles Eyebolts etc. In contrast, the EU Machinery Directive (EN292-2) specifies the following load safety factors for rigging components: Rigging component Steel wire ropes Welded link chains Fabric slings Metal components Safety factors factor 5 (EN292-2, chpt a) factor 4 (EN292-2, chpt b) factor 7 (EN292-2, chpt c) factor 4 (EN292-2, chpt d) The regulations enshrined in the EU directive are general regulations - few in number and not always particularly clear or detailed. Loudspeakers and their rigging components are not specifically covered. The electrical and mechanical standards of construction for lanterns are covered by a DIN standard (DIN 15560). However, there is no specific DIN or Euro standard covering standards of construction for loudspeaker rigging components or assemblies. To make matters clear, at least as far as d&b rigging accessories are concerned, we have adopted the following load safety factors: 12X load safety factor: Chains, ropes, shackles, eyebolts, straps and hooks. 10X load safety factor: Accessories and fixings for mobile use. 5X load safety factor: Accessories generally employed in fixed, permanent installations. The 12X load safety factor is derived from 9, GUV 6.15 The 10X load safety factor is likewise derived from 9 GUV as a basic safety standard for rigging components. From EN292-2 chpt d a 4X minimum load safety factor can be derived for all metal rigging components used in fixed installations. Our choice of a 5X minimum load safety factor for such components provides an enhanced safety margin. Attaching rigging to loudspeaker cabinets d&b rigging accessories are supplied with specific mounting instructions and must only be assembled and used in the manner described in these instructions or as specified on the relevant page(s) of the d&b rigging accessories manual. Failure to fully observe specified load capacities or fitting instructions can overload the rigging accessories or the loudspeaker cabinet fixing points causing them to break. The d&b rigging accessories described in the d&b rigging accessories manual and specific mounting instructions are directly 6-8 General safety and mounting instructions

7 attached to d&b loudspeaker cabinets and are secured using either screws or bolts fastened to threaded inserts fitted in the loudspeaker cabinets. For attaching rigging, d&b loudspeaker cabinets are fitted threaded inserts. Where provided, the supplied screws or bolts should be used to attach rigging. Using screws or bolts other than those supplied or specified can result in an insecure and unsafe fixing. Additionally, using screws or bolts longer than those supplied or specified can physically damage a cabinet by penetrating its interior and causing an air leak. Load ratings d&b rigging accessories are designed and constructed to have a load rating appropriate to their intended use. The safe working load (SWL) for each d&b rigging accessory is specified in its respective data sheet and on the relevant page(s) of the d&b rigging accessories manual. In general, d&b rigging components are designed with a 10X load safety factor. Some components, specifically intended only for use in fixed, permanent installations are designed with a 5X load safety factor. Other components, for use with moving as opposed to static loads and therefore subject to the additional wear of dynamic loading, are designed to have a 12X safety factor. Safety certificates In Germany, the health and safety authority together with industrial and professional associations has published a safety code for stages and studios. Sound reinforcement equipment installed in these places has to comply with the provisions of this code, published as BGV C1 (GUV 6.15) Unfallverhütungsvorschrift Veranstaltungs- und Produktionsstätten für szenische Darstellung. The code provisions include: 1. Plastic load bearing components are not permitted. 2. Plastic laminated or coated steel wire ropes are not permitted. 3. Load connector parts must have a load safety factor 10X greater than their stated SWL (Safe Working Load). 4. Load bearing chains must have a load safety factor 0.5X greater than the dynamic value specified by the manufacturer - equivalent to a load safety factor 12X the specified SWL. Provision #4 needs some explanation. High tensile chains and related components conforming to EN 818, grade 8 are specified with a load safety factor 4X their SWL. To comply with the 12X load safety factor required for load bearing chains under BGV C1 (GUV6.15), the specified SWL for DIN certified chains must be derated by a factor of three. (2.0 E) 7-8

8 Z5054 Ci60/Ci90 Flying adapter The Ci60/Ci90 Flying adapter enables Ci60/Ci90 loudspeakers mounted in Z5051 Ci60/Ci90 Horizontal bracket to be suspended at a precisely defined vertical flying angle. The locating holes in the upper plate will accept a 1 tonne shackle or alternatively a Z5017 TV spigot HD to be used with the Z5016 Pipe clamp HD. [1] [4] [3] [2] IMPORTANT! CI6/CI Load safety information Maximum permitted safe working load (SWL) for the adaptor is 65 kg/143.3 lb. This is equivalent to the combined weight of two Ci60/Ci90 cabinets, two Z5051 Ci60/Ci90 Horizontal brackets and one Z5053 Ci60/Ci90 Bracket connector. This value must on no account ever be exceeded. Secondary safeties should always be provided and used when flying or fixing loudspeaker loads overhead. Part list Z x Z5054, Ci60/Ci90 Flying adapter [1] 4 x M10 x 25 Hex head bolt [2] 4 x Plain washer [3] 4 x M10 nut, selve locked [4] Weight Z kg / 4.9 lb Assemly The Flying adapter [1] bolts to the four holes on the rear of the Z5051 Ci60/Ci90 Horizontal bracket using the four Hex head bolts [2], the plain washers [3] and the selve locking nuts [4]. Tool required: open-ended or ring spanner/wrench SW 17 mm. Fixing bolts with a thread length longer than 25 mm must not be used. Operation The Z5054 Ci60/Ci90 Flying adapter is equipped with eleven locating holes (12 mm) at 30 mm spacings. The vertical flying angle depends on which of the adapter locating holes is used as the cabinet flying point - the resulting angles, upwards (positive angle) or downwards (negative angle) are shown in the figure on the left. The loudspeaker will adopt a stable vertical position without the need for additional stabilising guy lines. A 24 mm hole is supplied in the rear of the adapter for securing cables. Vertical flying angles for Ci60/Ci90 loudspeakers fitted with Z5054 Ci60/Ci90 Flying adapter attached to Z5051 Ci60/Ci90 Horizontal bracket. The bracket is attached as close as possible to the speaker cabinet. (2.0 E) Z5054

9 d&b audiotechnik AG, Eugen-Adolff-Str. 134, D Backnang, Germany, Phone , Fax